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本帖最后由 yyj 于 2018-1-30 11:01 编辑
; d7 v+ G9 @/ t: C' c4 ^8 R- [code]EDMA sample test application
* Y( z$ `- e* J$ B* Y; T& m - /*
/ L5 x3 q+ Z, o5 Z! c - * edma_test.c" L* U# R. D9 z R( Q2 Z7 d
- *" N5 W/ Q8 y F5 ^$ [
- * brief EDMA3 Test Application+ p6 Z6 W F$ V: q! K# C# C4 {" [+ v
- *
) @- o, {# n5 O8 y8 p& H - * This file contains EDMA3 Test code.
" A b8 O5 w7 N1 { - *
9 g- C: U2 m+ e - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE3 B( C$ T$ K2 x+ r
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT% [& ?/ n5 B9 U$ p2 }/ U# w% h' N
- * TO CHANGE.
- m( s/ b! R. K: G - *
- [8 Y" F+ `9 u! G- i7 z, A - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/0 m! m, x7 X+ `" p+ _! Y
- *) G$ I& C0 t# I
- * This program is free software; you can redistribute it and/or
7 |. @1 L* {+ m: Z: ?1 I$ }# }$ T - * modify it under the terms of the GNU General Public License as- G: k4 V& {' ]4 X+ `9 D6 b
- * published by the Free Software Foundation version 2.' i7 G4 k4 R5 I+ v F8 [9 l
- *
' j% O9 j% j7 a9 U T - * This program is distributed "as is" WITHOUT ANY WARRANTY of any
( n) U X4 O. O7 E - * kind, whether express or implied; without even the implied warranty2 g2 S3 i- c6 ^' p) l8 ?4 A
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the3 Y( z. B5 g+ ~9 f) l$ A
- * GNU General Public License for more details.
' y, [. t" K1 ]& T- Q V, J+ k8 Q, x - */
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& C5 N" s' C0 ?0 ?# f- #include <linux/module.h>$ _1 C( u* z9 P' B
- #include <linux/init.h>) ~5 p' l [8 V
- #include <linux/errno.h>9 x$ f, e& Q/ Q/ n
- #include <linux/types.h>
* r4 g5 }' }' g7 Y: Y1 ^) y6 W - #include <linux/interrupt.h>
, r: ?, q3 i: @- i: M/ X - #include <asm/io.h>0 m* s" _. w% B1 X" f/ ]
- #include <linux/moduleparam.h>2 k5 g& \6 R$ u5 K! h
- #include <linux/sysctl.h>
7 V: O) C( J( Q8 Z/ \6 ^ - #include <linux/mm.h>5 l7 d8 r) h) Z# z& t4 u& G; Y# g! d" U
- #include <linux/dma-mapping.h>* d; k$ v( Q" S/ t6 Y
- * f+ v+ u$ G: ^
- #include <mach/memory.h>! d3 u* F- N9 F2 ^9 W* _8 v+ H
- #include <mach/hardware.h>
1 m2 _1 P; f$ B: U2 f - #include <mach/irqs.h>2 K$ Y8 f9 _6 n* ~
- #include <asm/hardware/edma.h>* a d; k* r z" i; J; n2 L
- . `# Z2 Q) G6 M% b0 I
- #undef EDMA3_DEBUG
8 i% O, _- ]; c* k; w1 { - /*#define EDMA3_DEBUG*/
: G6 u0 B& M% h/ t) Z' f
5 B5 J, L/ q* I% R- #ifdef EDMA3_DEBUG7 c* V5 I2 L0 J8 @- N6 i
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
5 u( v8 ?3 G+ s8 V6 x# ^ Q6 j3 n/ x+ B - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__); _( ^- F6 l+ C+ h
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
% y+ n( r9 P8 T - #else/ S7 e# d( a4 _5 `/ a! D
- #define DMA_PRINTK( x... )- J3 k9 v y+ k! s" p+ ? R
- #define DMA_FN_IN: `; l" W% S) Z- ]7 @: M
- #define DMA_FN_OUT
( B) \( z" o" X( r. Z - #endif, Q& V8 y) o! o F7 ~% i; C
- ( l' G( r! ^' [' i# u) w. I
- #define MAX_DMA_TRANSFER_IN_BYTES (32768), N# T0 O, K7 B6 ]- \
- #define STATIC_SHIFT 3; `$ G% E8 \$ k6 t) v4 @& ?! C
- #define TCINTEN_SHIFT 20+ X- m$ I3 S9 H9 {" N$ _+ {
- #define ITCINTEN_SHIFT 21
. q! C/ w% u% n4 m - #define TCCHEN_SHIFT 226 v6 s+ |1 S+ _# o" l
- #define ITCCHEN_SHIFT 23
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- static volatile int irqraised1 = 0;- ^' T9 K1 D) w2 q. M3 `# P7 x& V3 U/ i
- static volatile int irqraised2 = 0;& W' X8 h1 D# m1 r
- ; S; k" S1 a/ ~, ~/ n* }
- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
8 r0 N* N5 ?# h, a2 C( F) c - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 J; b$ r3 w; s" c) ]
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% H, q4 T& m. h# y$ r" X* X
- k9 P2 H1 _3 Y/ P7 q
- dma_addr_t dmaphyssrc1 = 0;
1 m0 t6 O2 s ?* A" h x2 [9 [ - dma_addr_t dmaphyssrc2 = 0;# M0 ?) f1 L* g6 V- L& s: A n
- dma_addr_t dmaphysdest1 = 0;
) P1 c! m; q/ H, W - dma_addr_t dmaphysdest2 = 0;
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- char *dmabufsrc1 = NULL;
8 \& P4 P7 V! Y( Q - char *dmabufsrc2 = NULL;; x- y( J: k" {; B/ P) X- k. x
- char *dmabufdest1 = NULL;
% l! P" G) I/ R; L& ~ - char *dmabufdest2 = NULL;1 s- J- \7 L5 p; x, K
# u* G. t) i% F: p2 E- static int acnt = 512;' [5 }: k3 l" s' L G5 A! C- g/ @
- static int bcnt = 8;( Q5 y: P8 h2 c0 O- s [0 f
- static int ccnt = 8;9 `5 b1 B8 L5 `/ ?! p- z k/ r
- ) U9 U4 |6 t J6 N' g
- module_param(acnt, int, S_IRUGO);
/ v+ e. l% u' W C. Y; Q! Y; ^ - module_param(bcnt, int, S_IRUGO);; X. }6 N- {7 c& a1 R
- module_param(ccnt, int, S_IRUGO);
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: O' R3 T$ H" C9 ^ 这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分,我在编译的过程中是用6 f8 ?7 l# [( j7 W3 @( b
arm-none-linux-gnueabi-gcc -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译,但是报的错误特别多,我又试着一个函数一个函数往进加,仍然是很多错误。
* ~8 c k" e( n0 @& { 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。9 P# S8 x) y9 @* l& h
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